1296

Phase diagram and critical behavior of the square-lattice Ising model with competing nearest- and next-nearest-neighbor interactions

Junqi Yin, D. P. Landau
Center for Simulational Physics, University of Georgia, Athens, Georgia 30602, USA
Physical Review E, vol. 80, Issue 5, id. 051117, arXiv:0909.4000v1 [cond-mat.stat-mech] (22 Sep 2009)
BibTeX

Download Download (PDF)   View View   Source Source   

2344

views

Using the parallel tempering algorithm and GPU accelerated techniques, we have performed large-scale Monte Carlo simulations of the Ising model on a square lattice with antiferromagnetic (repulsive) nearest-neighbor(NN) and next-nearest-neighbor(NNN) interactions of the same strength and subject to a uniform magnetic field. Both transitions from the (2×1) and row-shifted (2×2) ordered phases to the paramagnetic phase are continuous. From our data analysis, reentrance behavior of the (2×1) critical line and a bicritical point which separates the two ordered phases at T=0 are confirmed. Based on the critical exponents we obtained along the phase boundary, Suzuki’s weak universality seems to hold.
No votes yet.
Please wait...

You must be logged in to post a comment.

Recent source codes

* * *

* * *

HGPU group © 2010-2025 hgpu.org

All rights belong to the respective authors

Contact us:

contact@hpgu.org